RunKit + npm: globalize

var Globalize = require( "globalize" ); Globalize.load( require( "cldr-data" ).entireSupplemental() ); Globalize.load( require( "cldr-data" ).entireMainFor( "de" ) ); console.log(Globalize("de").parseNumber("1.2")); // > NaN console.log(Globalize("de").parseNumber("1.200")); // > 1200